But for the two Southern California food trucks, it’s not just about winning the $50,000 prize. It’s about winning the love of fans nationwide.

“Hopefully it will open up a lot of doors,” said Gregory King, founder of Postcards, a food truck that features Central American soul food.

King’s Postcards and GD Bro from Orange County are just two food trucks out of seven vying for the cash and long-lasting success that the reality show competition has been able to provide. But first they have to survive a 2,500-mile, food-filled road battle hosted by celebrity chef Tyler Florence.

The six-episode show, which debuts at 9 p.m. Sunday, kicks off in Santa Monica and follows Route 66 for a finale in Chicago.

GD Bro Truck co-founder Kevin Nguyen, who briefly attended Riverside Community College, said he and his business partner Mark Cruz “had a dollar and a dream” when they started back in April 2013. Now the two will not only star in the “The Great Food Truck Race” but plan to announce the location of their first brick-and-mortar operation the day after the first episode and get foodies excited about its signature stuffed burgers.

King, 49, who lives in the Liemert Park neighborhood of Los Angeles and started Postcards in March 2013, also plans to showcase his skills, which his father, Willie King, helped lovingly hone.

“He had all the tricks in the kitchen, and it was important for all four of his sons to cook,” King said. “He said, ‘No matter what, if you know how to cook, you’ll always be OK.’ ”

King, who said he earned a master’s degree in business administration from Vanderbilt University in 2009, started working at age 11 in his father’s first soul food restaurant in the Crenshaw district of Los Angeles as a waiter. Now at the helm of his own eatery, King aims to serve “healthy soul food” with such dishes as The Signature, which features baked chicken and sides cooked without animal products.

More than just providing stuffed burgers with kooky names, Nguyen added that his company is just “a bunch of fun loving guys” who strive to give their customers a “family backyard barbecue” experience.

“I feel like the names of our burgers like Juan & Only and the Italian Stallion are a reflection of our personality,” Nguyen said. “I’m really excited for California and the entire world to see what we’re all about.”